Which physical condition could lead to cardiac arrest?

Severe arrhythmia is a critical condition that significantly increases the risk of cardiac arrest. Arrhythmias refer to irregular heartbeats, which can manifest in various forms, including tachycardia (an abnormally fast heart rate), bradycardia (an abnormally slow heart rate), or other abnormal heart rhythms. When the heart beats irregularly, it can disrupt its ability to pump blood effectively. In severe cases, these arrhythmias can cause the heart to stop functioning entirely, leading to cardiac arrest.

The other conditions mentioned, such as high calorie intake, normal blood pressure, and increased physical activity, do not directly lead to cardiac arrest in the same immediate manner. High calorie intake can contribute to long-term cardiovascular issues, but it does not cause cardiac arrest on its own. Normal blood pressure is a sign of a healthy cardiovascular system and is generally not associated with cardiac arrest. Increased physical activity, while it can have health risks if taken to extremes or without proper conditioning, typically does not lead to cardiac arrest and is often beneficial for heart health when done appropriately.